Not only battle music.
It would also fit well as an intro for the classic "single man against whole armies of overpowered dumbasses" RPG-style game, whether real-time or turn-based.
Imagine, first scene, camera showing a single soldier, behind him, blurred, a legion of elites. Then reversal, we see the soldier blurred and his companions clear, zooming out and entering birds-eye view, or diagonal front. Camera turning around and we see the standard, abject-fear-inspiring, yet always defeatable bad guy. BAM. Fanfare, orders given, soldiers move. Screen fades out. Music changes, we see the hero.
Alternative, a Chaos Faction-style intro. We see men fighting, men dying. And all of a sudden, time freezes, a single warrior gives you a direct look in the eyes. Insert some cool line here, go to main menu.